Anchor nut



Patented Nov. 27. 1945 2,389,989

UNITED STATES ANCHOR NUT Richard W. Luce, Southport, Conn. Application December 9, 1942, Serial No. 468,343 2 Claims. (oi. lei-"15) The invention herein disclosed relates to a the end wall alined with the bolt-receiving openthreaded locking device of the kind in which an ing through the flange. In this position, the end elastic washer is used to efi'ect a locking action wall of the case is spot welded to the flange to between engaging threads. More particularly, secure the case to the flange.

, the invention relates to an anchor nut of,this 5 The nut 3 is an ordinary hex nut which is availkind. I able at low cost. The nut makes a close fit with Anchor nuts include an outwardly extending the case and is forced into the case through the flange which is provided with openings through open end thereof. It is pressed into position with which the nut may be riveted to a, structural eleone face thereof engaging the end wall 1 of the merit, axial alined with a bolt opening through ii) case. The tapped opening 9 through the nut is the structural element. Commonly, anchor nuts alined with the bolt-receiving openings in the of the kind to which this invention relates have flange and in the end wall of the case. Due to been made from round bar stock. The stock is the hexagonal configuration of the case and the headed to form the flange at one end of a section nut, the nut is restrained against relative rotathereoi'. It is then bored and at one end countertion with respect to the case. bored to receive an elastic washer. The blank The elastic, fibrous washer i is hexagonal and so formed is tapped, the washer is then inserted the opening iii therethrough is of a diameter less in the counterbore and the edge rolled over to than the major diameter of the thread of the secure the washer. These operations make the nut and greater than the minor diameter of the cost of such nuts comparatively high. thread of th nut. It is inserted in the case after In accordance with this invention, there is prothe nut and makes a close fit with the case. As vided an anchor nut of the kind to which'the the washer is hexagonal, it is restrained against invention relates, the construction of whichperrelative rotation with respect to the case and in mits advantage to be taken oi. inexpensive nuts consequence with respect to the nut.

that are available on the open market and an After the washer is inserted in the case, that anchor nut that is assembled out of inexpensive portion of the wall of the case that extends beparts. The anchor nut of this invention consists yond the washer is turned in and forms an inof a strip of sheet metal stamped to form the wardly extending flange H which is compressed flange, a case secured to the flange, as by welding against the washer. This flange retains the nut for example, and a nut and washer assembled and washer in assembled relation in the case. in the case. i I From the foregoing description of the embodi- An anchor nut embodying the invention is illusment of the invention illustrated in the drawing, trated in the accompanying drawing and 'deit will be apparent that by this invention there scribed in detail below from which a clearer unis provided an inexpensive anchor lock-nut of the vderstanding of the invention may be had. The kind in which an elastic washer is used to effect drawing includes: a locking action.

Fig. 1 which is a plan of an anchor nut; It will be obvious that various changes may be Fig. 2 which is a section of the same taken along made by. those skilled in the art in the details the line 2-2 of Fig. 1; and of the embodiment of the'invention disclosed in Fi 3 wh h is an exploded viewshowing the the drawing and described in detail above within Parts in elevation the principle and scope of the invention as ex- The anchor nut illustrated in the drawing conpressed in the appended claims. sists of a flange l, a sheet metal case 2, a nut 3 I claim: and an lasti fi r us washer 4. The flange I 1. An anchor nut of the kind that includes an is stamped from sheet metal and it is provided lastic element for efiecting a locking action with with, centrally thereof, bolt-receiving opening 5, a, bolt entered in the nut which anchor nut comand spaced holes 6 through which rivets may prises in combination a strip of sheet metal formextend for securing the fiangeto a structural ing a. flange and having a bolt-receiving opening el me ttherethrough, a sheet metal, cup-shaped case of The case 2 is drawn from sheet metal into the polygonal configuration in transverse section and form of a cup. It is hexagonal in transverse sechaving an opening through the end wall alined tions or in plan an initially open at one end. with the bolt opening through the flange, the The end wall I of the case is'pierced to form a end wall of the case being welded to the flange, bolt receiving opening 8 therethrough. This case a nut of like polygonal configuration as the case is placed on the flange 8 with the opening through 5 Within the case with one face thereon abutting 2 t asaaaao against the end wall of the case; and an elastic washer or like poly onal configuration as the case within the case, the end edge of the case being bent over forming an inwardly extending flange securing the nut and washer in the case.

2. An anchor nut 01' the kind having an elastic element for efiecting a locking action with a bolt entered therein, which anchor nut comprises in combination a strip of sheet metal forming a flange and having a bolt-receiving opening therethrough, a sheet metal, cup-shaped case of hexagonal configuration in transverse section and 10 and washer in the case.

RICHARD W. LUCE. 

